Although there are many types of locks, the four most common are padlocks, deadbolts, knob locks, and levers.
They are called mortise locks. Those old pretty crystal doorknobs (if original) in old homes are a type of lockset called a mortise lockset.
A mortise refers to the pocket cut into the door where the lock is fitted. Therefore, a mortise lockset cannot be installed on just any door. They are great for replacing the hardware on homes built before 1950. They can be used on new doors, but special preparations must be made.
In a mortise lock you can unlock both the latch and deadbolt locks by turning only one lever, but in cylindrical locks you have to lock and unlock the deadbolt and the latch separately.
There are two types of door lock latches or bolts here: a spring bolt or a deadbolt. In the case of spring latch, one uses a bolt here, with the help of a spring clip. The spring is something that compresses and unlocks or locks the bolt. In the case of a deadbolt or deadlatch, there is no spring mechanism.
Difference between bathroom locks and privacy locks
A privacy lock will have a tubular notice latch, while a bathroom lock will have what is called is full bathroom mortice, which is a larger and more complex locking system.
A latch bolt is the part of a door that keeps the door from coming open. In order to be a latch bolt, the item needs to slide into place. This separates the latch bolt from chain locks or hooks, where the fastening mechanism is simply placed in a holder.
There are three varieties of these locks: single cylinder, double cylinder, and single cylinder with a thumb turn. Single-cylinder uses a key or rotating thumb turn on one side that actuates the locking mechanism. You will likely see these in sliding doors that can only be locked and unlocked from the inside.
A sash lock works by using a lock, latch & handle mechanism meaning you can open and close the door without the worry about it locking behind you and you don't need the key each time. Available in a variety of security levels dependant on requirements, along with insurance approved mortice sash locks.
What are MultiPoint Locks? Multipoint locking systems are found on most uPVC and composite doors. They are the long strip which bolts in to the side of the door. It locks at multiple points along the frame, hence the name multipoint lock.
Lock Grades and Ratings
Deadbolts provide the highest level of front door security. To ensure your door locks provide solid home security, choose locks and deadbolts that are pick-resistant and bump proof.
Binary Locks − A lock on a data item can be in two states; it is either locked or unlocked. Shared/exclusive − This type of locking mechanism differentiates the locks based on their uses. If a lock is acquired on a data item to perform a write operation, it is an exclusive lock.
An exclusive or write lock gives a process exclusive access for writing to the specified part of the file. While a write lock is in place, no other process can lock that part of the file. A shared or read lock prohibits any other process from requesting a write lock on the specified part of the file.
Oracle locks fall into one of three general categories. DML locks protect data. For example, table locks lock entire tables, row locks lock selected rows. DDL locks protect the structure of schema objects—for example, the definitions of tables and views.
In lock: Development of modern types. … in England, patented a double-acting tumbler lock. A tumbler is a lever, or pawl, that falls into a slot in the bolt and prevents it being moved until it is raised by the key to exactly the right height out of the slot; the key then slides the bolt.
: a lock set whose parts are permanently combined and which can be applied to a door as a single unit.
July 27, 2018. The passage/hall/closet function is ideal for doors in hallways, closets, and other rooms where a key is not necessary. The lock is freely operational from both sides of the door at all times.
A tubular latch is an item of ironmongery which is usually morticed* into a door, which allows the door to be opened and closed by means of a Door Handle or Door Knob. The word 'latching' is the act of a door being closed, and remaining held shut.
A Night Latch (Yale Lock) is a lock commonly found on home front doors; they are mounted to doors that open inwards and mounted to the inner surface of the door. When the door is closed the night latch automatically latches the door shut.